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06-13-2016, 12:00 AM
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#1 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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4l60e kicks into drive hard
So I've been trying to figure out why my 2002 4l60e kicks into drive hard. I've seen people having other problems in series with the Trans harshly kicking into drive but I don't have any other problems, shifting from one gear to another is nice and in a timely manner and I have reverse, which doesn't kick into gear harshly also my down shifting is normal, and my torque converter locks up and unlocks normal as well. I'm using TCI's EZ-TCU with TCI's remote mount TPS. My TCU isn't throwing any codes either. Anybody have any ideas?
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06-13-2016, 12:41 AM
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#2 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: 4l60e kicks into drive hard
Are you running an NSS?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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06-13-2016, 01:33 AM
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#3 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 4l60e kicks into drive hard
Are you talking about the neutral safety switch on the gear selector? If so I am not, the harness for the TCU doesn't have any wiring pigtails that go to the switch on the gear selector
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06-13-2016, 01:40 AM
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#4 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 4l60e kicks into drive hard
I would also like to add that I am running the stock 72 truck til it column neutral safety/ BU light switch
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06-13-2016, 07:45 PM
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#5 |
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1965 Chevy C10, 2005 4.8L/4l60
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
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Re: 4l60e kicks into drive hard
is your idle rpm high?
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
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06-14-2016, 01:58 AM
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#6 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 4l60e kicks into drive hard
My idle in Park/Neutral is 700 and in Drive the idle drops to 500
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06-14-2016, 02:09 AM
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#7 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 4l60e kicks into drive hard
edited: not sure why it did a double post...
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06-14-2016, 07:43 PM
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#8 |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: 4l60e kicks into drive hard
Is the controller showing Closed Throttle/0% TPS at idle?
If the controller thinks your above Idle it will raise pressure, Anything above minimum Regulated Pressure will open the Forward Abuse Valve in the Valve Body.....Bypassing the Forward Clutch Accumulator, Giving a harsh Forward Engagement. Also the output to the EPC should be around 1.00 AMPS at Idle. |
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06-16-2016, 04:26 AM
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#9 |
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Registered User
Join Date: Mar 2010
Location: a t w a t e r cali 95301
Posts: 10,713
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Re: 4l60e kicks into drive hard
Did a new tune on the TCU and now the TPS is reading 00% at idle, and it doesn't kick very hard into gear. Thanks guys!
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